Drying-machine.



PATENTED-JULY 12,1904

, s. A; COHEN. DRYING MACHINE. APPLIUAIION FILED 13110.18, 1903.

3 SHEETS SHEET 1.

N0 MODEL.

I\ WITNESSES:

No. 764,561. PATENTED JULY 12, 1904,

1 8. A. COHEN.

DRYING MACHINE.

APPLICATION FILED DEG,18, 1003.

no MODEL. 3 SHBETSPSHEET 2.

WITNESSES:

W IW- Patented July 12, 1904.

PATENT OEEicE.

STITANLEY A. COHEN OF NEW YORK, N. Y.

DRYING-MACHINE.

SPECIFICATION forming part of Letters Patent No 764,561, dated July 12,1904.

Application filed December 18, 1903. Serial No. 185,621. (No model.)

To all whom it iii/my concern:

Be it known that I, STANLEY A. COHEN, a citizen of theUnited States, anda resident of New York city, in the county of New York and State of NewYork, have invented certain new and useful Improvements in Drying-Machines, of which the following is a specification.

My invention consists in improvements in machines for drying paper andthe like, and is especially adapted to the drying of ink or othercoloring-matter, paste, enamel, or gum upon paper or fabric in sheets orin the web.

The object of my invention is to provide a compact device simple andeasily constructed and requiring little skill to operate. ltisespecially adapted to drying printed paper, but may also be used fordrying substantially any fabric.

My device is adapted to feed the material to be dried in sheets or inthe web from the supply to the delivery end thereof without clogging andwith little attention from the operator.

In the drawings, Figure 1 is a side elevation of the machine. Fig. 2 isalongitudinal section on the line 1 1 of Fig. 1. Fig. 3 is a verticalsection on the line 2 2 of Fig. 2. Fig. 4: is a view illustrating theperforations through which the air-blast is forced.

Referring to the drawings,in which like numerals refer to correspondingparts, 1 is the frame of the machine, supporting the air-box 2.

3 is a blower by means of which air is forced into the box 2 through thepipe 4:- The metal plate 5 is secured within the box 2, as indicated inFigs. 1 and 3, by means of screws or bolts 6. The plate 5 is providedwith perforations 7 throughout its en tire surface. Above the plate 5the rollers 8 are journaled in the sides of the box 2. Outside the box 2the gearwheels 9 are carried on the shafts 10 of rollers 8 and areadapted to be engaged by the endless chain 11. One of the shafts 9 alsocarries a pulley 12, engaged by power-belt 13. Each roller 8 is slightlycut away in its center an amount corresponding to the thickness of thetapes 1 1, which encircle each pair of rollers 8, according to thearrangement shown shown.

are idle or guide rollers.

in Fig. 2. Above the box 2 the posts support the upper box 16, withinwhich are arranged a perforated metal plate 17 and rollers, tapes, &c.,corresponding to and geared together the same as those just described.To the end of box 2 is secured the rounded shell 18, the upper end ofwhich is litted to the box 16, as shown in Figs. 1 and 3. At the innerside of shell 18 is secured the curved perforated plate 19. The severalrollers 20 are journaled in the ends of shell 18 and arranged asindicated in Figs. 2 and 3. Around the rollers 20 and engaging the sameextend the three tapes 21, the rollers 20 being slightly cut away, sothat the tapes will not project beyond their surface. The tape or belt22 extends from one of the rollers 8 to the nearest roller 20, and soconnects the system of rollers 8 with rollers 20 that they revolve inunison. The fan or blower 23 is arranged with the branch pipes 2 1discharging through the sides of box 16 below ierforated plate 17, theextension 25 leadinginto the shell .18, as The rollers in the upper box16 are revolved by power applied to one of their shafts, as indicated inFig. 1. The rollers 26 Within shell 18 are placed the guides 27.

The operation of the machine is as follows: The air-blast from fans 3and 23 is forced into the machine through the pipes indicated in Fig. 1,the blast being preferably heated for the purpose of drying the materialmore rapidly and effectively. The material to be dried is then insertedbeneath the outer roller 8, driven, as indicated, from the power-belt13. The moist surface on the lower :face of the material at once is metby the hot air escaping under pressure through the perforations in plate5, and the material is held up against the rollers 8 and tapes 14-. bythe blast while it is carried along its course by said revolving rollersand tapes. WV hen the material reaches the farther end of box 2, it isdelivered within the shell 18 and carried by rollers 20 and tapes 21 ina curved course until ejected into the box 16, where it is met by theblast from pipes 24: escaping through the perforations in plate 17,which holds it against the rollers and tapes while it is being dried onthe reverse side and carried along to the delivery end 28 of themachine. WVhile the material is traveling from the lower to the upperbox through the conduit or shell 18 it is held against the rollers 20and tapes 21 by the blast from pipe 25.

When the material is in sheets, the operator may feed them into themachine as rapidly as desired, having care, however, that no sheetolverlaps the moist surface of the preceding 3 met.

It will be seen that my machine affords a positive feed, which acts inconjunction with the hot-air blast while holding the material againstthe feed tapes and rollers and atthe same time keeps the moist surfaceout of contact with any part of the machine. By employing the device tocarry the material from one drying-box up to another drying-boxfloor-space is saved. As many drying-boxes as desired, one above theother, may be employed to complete the drying. The pe'rforated plateswhich I employ are inexpensive as compared with nozzles for deliveringthe blast. They may readily be cleaned and kept in order. In turning thematerial from one drying-box to another drying-box through the shell orconduit 18 the position of the perforated plate is reversedthat is tosay, the air-blast escapes from the conduit to the atmosphere throughthe perforations; but the path of the material is between the blast andthe perforated plate 19, whereas in the boxes the path of the materialis outside the perforated plates. In each arrangement, however, theblast serves to retain the material against the feed-rollers whiledrying.

When the material has been carried through the first box, the ink,paste, enamel, or gum on its lower surface will have become sufficientlydry to receive without injury the contact of the feed rollers and tapesof the second box, in which the material is subjected to thesupplemental drying by the hot air directed against its reverse surface.From the second box the material may be delivered to a frame or table,or if it be in the web it may be rolled up. If the drying in the machineshown be not sufiicient, either because the course of the material hasnot been long enough or,for any other reason, the number of drying-boxesmay be increased indefinitely in series and the material led from thesecond to a third, and so on, as indicated by dotted lines in Fig. 1. Itis of course immaterial whether the first box is arranged below, asshown, or above the supplemental boxes.

In case the effect of the first box is not suffieient to so dry thelower surface of the material that it may contact with the feedingdevices of the second box the apparatus may be arranged with the secondbox inverted. The

same surface of the material will then be subjected to the blast as inthe first box.

WVhat I claim as new, and desire to secure by Letters Patent, is

1. In a drying-machine, a set of feed-rollers adapted to propel thematerial in a straight path, a second set of feed-rollers adapted topropel the material in another straight path, and means for carrying thepaper from the first set of rollers to the second set of rollers whileunder the influence of the drying means, and without permitting anycontact except that of an air-blast with the moist surface of the paper,substantially as described.

2. In a drying-machine, feed-rollers, tapes connecting said feed-rollersand moving therewith, adapted to propel the material without allowing itto enter between the feed-rollers, a perforated plate parallel to thefeeding means, and means whereby an air-blast is forced through theperforations of the plate to dry the material and maintain it in contactwith the feeding means while moving through the machine.

3. In a drying-machine, aperforated plate, feed-rollers adapted to movethe material in a straight path while its moist surface is subjected toan air-blast escaping to it through perforations in said plate, a secondset of feedrollers located in another plane and adapted to likepurposes, and means whereby the material is transferred from the firstfeed-rollers to the second set of feed-rollers while being constantlysubjected to a drying-blast and one surface maintained away fromcontacting points. i

4. In a drying-machine, means for producing an air-blast, a shell forreceiving the airblast having perforations in its side opposite theair-blast, and feeding means adapted to carry the material through theshell between the blast and the perforations and to maintain one surfaceso exposed to the air-blast as to dry the same and to hold the oppositesurface constantly in contact with the feeding means.

5. In a drying-machine, means for producing an air-blast, feeding meansadapted to propel the material in a straight path, a perforated platelocated between the air-suppl y and the straight path of the material, asecond perforated plate, and additional feeding means adapted to propelthe material in a curved path between the air-supply and said secondperforated plate through which the air escapes to the atmosphere.

Signed at New York, in the county of New York and State of New York,this 15th day of December, A. D. 1903.

STANLEY A. COHEN. Witnesses:

AUGUSTUS MAYERS, IVALTER D. APPLEYARD.

